| strs_capitalize | Capitalize the first character of each sentence |
| strs_casefold | Perform case folding on strings |
| strs_center | Center a string in a field of a given width |
| strs_contains | Check if string contains a substring |
| strs_count | Count occurrences of a substring in a string |
| strs_endswith | Check if string ends with a specified suffix |
| strs_expandtabs | Expand tabs in a string to spaces |
| strs_find | Find the first occurrence of a substring in a string |
| strs_isalnum | Check if string is alphanumeric |
| strs_isalpha | Check if string contains only alphabetical characters |
| strs_isascii | Check if string contains only ascii characters |
| strs_isdecimal | Check if string contains only decimal characters |
| strs_isdigit | Check if string contains only digits |
| strs_islower | Check if string is in lowercase |
| strs_isnumeric | Check if string contains only numeric characters |
| strs_isspace | Check if string contains only whitespace characters |
| strs_istitle | Check if string is in title case |
| strs_isupper | Check if string is in uppercase |
| strs_join | Join elements into a single string with a separator |
| strs_ljust | Left-justify string in a field of a given width |
| strs_lower | Convert string to lowercase |
| strs_lstrip | Left strip characters from a string |
| strs_normalize_whitespace | Normalize whitespace in a string |
| strs_removeprefix | Remove a prefix from a string |
| strs_removesuffix | Remove a suffix from a string |
| strs_replace | Replace substring in a string |
| strs_rfind | Find the last occurrence of a substring in a string |
| strs_rjust | Right-justify string in a field of a given width |
| strs_rstrip | Right strip characters from a string |
| strs_slice | Slice substrings from a string |
| strs_split | Split string into substrings |
| strs_splitlines | Split string into lines |
| strs_startswith | Check if string starts with a specified prefix |
| strs_strip | Strip characters from both ends of a string |
| strs_swapcase | Swap uppercase and lowercase characters in a string |
| strs_title | Convert string to title case |
| strs_upper | Convert string to uppercase |